Classification
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
715
600 - Technology
607
900 - History & geography
489
363 - Other social problems & services
465
333 - Economics of land & energy
454
620 - Engineering & allied operations
415
610 - Medicine & health
398
300 - Social sciences
307
140 - Specific philosophical schools
280
320 - Political science
274
500 - Natural sciences & mathematics
269
330 - Economics
245
580 - Plants (Botany)
220
380 - Commerce, communications & transportation
207
400 - Language
207
576 - Genetics & evolution
159
370 - Education
145
100 - Philosophy & psychology
142
410 - Linguistics
135
551 - Geology, hydrology & meteorology
134
540 - Chemistry & allied sciences
133
630 - Agriculture & related technologies
128
581 - Specific topics in natural history
101
340 - Law
99
720 - Architecture
91
530 - Physics
85
800 - Literature & rhetoric
83
301 - Sociology & anthropology
81
414 - Phonology & phonetics
69
200 - Religion
63
304 - Factors affecting social behavior
54
612 - Human physiology
54
658 - General management
49
170 - Ethics
47
780 - Music
42
770 - Photography, photographs & computer art
28
361 - Social problems & social welfare in general
23
120 - Epistemology, causation & humankind
18
615 - Pharmacology & therapeutics
18
520 - Astronomy & allied sciences
13
791 - Public performances
12
297 - Islam, Babism & Bahai Faith
10
590 - Animals (Zoology)
8
657 - Accounting
8
160 - Logic
7
350 - Public administration & military science
7
550 - Earth sciences
7
360 - Social problems & services; associations
4
364 - Criminology
4
more ...